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Re: my 85 mustang "gremlin"
So is this system duraspark 2?Those old boxes would die with regularity, and
newer cheapy replacements were not made to hold up as well as original ford
parts.Run 12 volts to them and they die real fast
"trainfan1" <lmsearing@usdatanet.net> wrote in message
news:KMydndzamaAzAAjenZ2dnUVZ_vudnZ2d@usadatanet.net...
> walt peifer wrote:
>
> > "trainfan1" <lmsearing@usdatanet.net> wrote in message
> > news:1sOdnYs5MPRxuwjeRVn-vA@usadatanet.net...
> >
> >>stang85_5 wrote:
> >>
> >>>I have a 1985 mustang gt H.O. 4bbl and every time it starts getting
warm
> >>>it
> >>>starts to cut out really bad and wants to die especially when I press
on
> >>>the gas. I've replaced the fuel pump, plugs and wires, fuel filter, and
> >>>cleaned the carb but nothing works. A mechanic at my work said it might
> >>>be
> >>>the ignition module so i replaced that and it got better for about a
week
> >>>and then started again. It seems to get worse each time I drive it. Do
> >>>you
> >>>think the problem is in the wiring to my ignition or is it something
> >>>else.
> >>>PLEASE HELP!!
> >>
> >>You've mentioned several carb issues - but not once addressed
enrichment.
> >>How is the accel. pump & power valve?
> >>
> >>Rob
> >
> >
> > If the car starts and run fine when cool (had to tell from post) but
starts
> > to perform poorly when warm to hot, there are several things to check:
> > 1)thermal breakdown of original ford coil
>
> Maybe...
>
> > 2)excessive heat from from of motor boiling fuel in metal line at front
of
> > motor.
>
> Probably not...
>
> > 3)thermostat not opening properly
>
> Doubt it...
>
> > 4) EGR malfunction (bad gaskets or erosion of plate on back of motor)
>
> Doubt it...
> >
> > the 85 4 bbl cars no the early CFI cars have no computer or brain box.
just
> > simple duraspark coil and ignition module.
>
> No, they are EEC IV, Duraspark II on the CFI, MCU (EEC II) & Duraspark
> II on the carbed.
>
> Some of these vehicles have a hot
> > idle compensator ( small module on a vacuum line going to carb) that
will
> > stick and make and engine run rich (black or gray smoke that makes eyes
> > water)
> >
> > power valve and accelerator pump (small rubber diaphragm in front of
carb)
> > will cause a stumble when accelerating, but car will run smooth at idle.
>
> Most likely. When the choke comes off during warm up, the problem
> appears. Power valve / accelerator pump.
> >
> > one last thing to check as some states/regions change fuel mixtures as
> > cool/cold weather approaches the small viton seal on the float bowl
needle
> > and seat have been known to break down and either stick and starve the
> > engine or disappear and not seal thereby causing a rich condition.
>
> Maybe, probably overlooked the float when he "cleaned" the carb.
> Certainly sounds like a starvation issue though.
>
> Rob
>
>
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